Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Fair Value Valuation Assumptions) (Details)

v3.5.0.2
Significant Accounting Policies (Fair Value Valuation Assumptions) (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Summary of fair-value options awarded to employees and directors        
Risk-free interest rate 1.70% 1.70% 1.50% 1.80%
Dividend yield 0.00% 0.00% 0.00% 0.00%
Expected volatility 49.00% 58.00% 50.00% 58.00%
Expected term 6 years 8 months 5 days 6 years 6 months 22 days 6 years 7 months 6 days 6 years 7 months 6 days
Forfeiture rate 5.00% 8.50% 5.00% 8.50%