Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Stockholders' Equity Attributable to Parent	$ 265,532	$ 267,328
Accumulated Translation Adjustment [Member]
Stockholders' Equity Attributable to Parent	2,238	2,685
Net current period other comprehensive gain (loss)	(447)
Reclassification of accumulated other comprehensive income (loss)	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Stockholders' Equity Attributable to Parent	(32)	(33)
Net current period other comprehensive gain (loss)	1
Reclassification of accumulated other comprehensive income (loss)	0
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' Equity Attributable to Parent	2,206	2,652
Net current period other comprehensive gain (loss)	(446)
Reclassification of accumulated other comprehensive income (loss)	$ 0