Annual report pursuant to Section 13 and 15(d) 12-31-2014

Stock-Based Compensation - Summary of Stock Option Activity (Details)

v2.4.1.9
Stock-Based Compensation - Summary of Stock Option Activity (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Options  
Outstanding at beginning of period 106,544us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Granted 1,448,751us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Forfeited (157,102)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Expired (14,714)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
Outstanding at end of period 1,383,479us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Exercisable at end of period 339,110us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Vested and expected to vest at end of period 1,327,485us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
Weighted Average Exercise Price  
Outstanding at beginning of period $ 28.90us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Granted $ 3.30us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Forfeited $ 3.84us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
Expired $ 10.54us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice
Outstanding at end of period $ 5.13us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Exercisable at end of period $ 11.42us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Vested and expected to vest at end of period $ 5.22us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
Weighted-Average Remaining Contractual Life, Outstanding at end of period 9 years 2 months 12 days
Weighted-Average Remaining Contractual Life, Exercisable at end of period 8 years 1 month 6 days
Weighted-Average Remaining Contractual Life, Vested and expected to vest at end of period 9 years 2 months 12 days
Intrinsic Value, Outstanding at end of period $ 18,600us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Intrinsic Value, Vested and expected to vest at end of period $ 17,700us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue