Stock-Based Compensation Employee Stock Purchase Plan (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total cash proceeds received from the issuance of common shares under the ESPP	$ 113	$ 152
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued under the ESPP (in shares)	18,642	26,019
Weighted-average purchase price per share by participant in the ESPP	$ 6.04	$ 5.83
Total cash proceeds received from the issuance of common shares under the ESPP	113	152
ESPP compensation costs recognized	$ 32	$ 46