20. Stock Benefit Plans and Stock-Based Compensation Option Activity (Details 1) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Shares
Outstanding at December 31, 2014 | shares	4,551
Granted | shares	2,849
Exercised | shares	(39)
Cancelled | shares	(331)
Expired | shares	0
Outstanding at December 31, 2015 | shares	7,030
Vested and expected to vest as of December 31, 2015 | shares	6,223
Vested and exercisable as of December 31, 2015 | shares	1,461
Average Exercise Price
Outstanding at December 31, 2014 | $ / shares	$ 5.35
Granted | $ / shares	6.15
Exercised | $ / shares	3.92
Cancelled | $ / shares	8.34
Expired | $ / shares	0
Outstanding at December 31, 2015 | $ / shares	5.54
Vested and expected to vest, end of period | $ / shares	5.50
Vested and exercisable, end of period | $ / shares	$ 5.08
Weighted Average Remaining Contractual Life Years
Options outstanding at December 31, 2015	8 years 252 days
Options vested and expected to vest, end of period	8 years 252 days
Options vested and exercisable, end of period	7 years 288 days
Aggregate Intrinsic Value
Exercised | $	$ 211
Options outstanding at December 31, 2015 | $	1,129
Options vested and expected to vest as of December 31, 2015 | $	1,035
Options vested and exercisable as of December 31, 2015 | $	$ 430