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

401(k) Plan - Additional Information (Details)

v2.4.1.9
401(k) Plan - Additional Information (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Defined Contribution Pension And Other Postretirement Plans Disclosure [Abstract]    
Retirement contributions $ 164,000us-gaap_DefinedContributionPlanCostRecognized $ 162,000us-gaap_DefinedContributionPlanCostRecognized