Restructuring Obligations and Other Charges, Restructuring Obligations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Restructuring obligations, beginning of period			$ 431		$ 0
Restructuring costs incurred	431		0		431
Cash payments			(431)		0
Restructuring obligations, end of period	431		0		431
Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring obligations, beginning of period			431	[1]	0	[1]
Restructuring costs incurred	431	[1]	0	[1]	431	[1]
Cash payments			(431)	[1]	0	[1]
Restructuring obligations, end of period	$ 431	[1]	$ 0	[1]	$ 431	[1]

[1] Severance costs include those expenses related to severance pay and related employee benefit obligations.