Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Stockholders' Equity Attributable to Parent	$ 286,780	$ 270,678
Accumulated Translation Adjustment [Member]
Stockholders' Equity Attributable to Parent	1,389	2,623
Net current period other comprehensive gain (loss)	(1,234)
Reclassification of accumulated other comprehensive income (loss)	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Stockholders' Equity Attributable to Parent	(23)	0
Net current period other comprehensive gain (loss)	(23)
Reclassification of accumulated other comprehensive income (loss)	0
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity Attributable to Parent	1,366	$ 2,623
Net current period other comprehensive gain (loss)	(1,257)
Reclassification of accumulated other comprehensive income (loss)	$ 0