Restructuring Charges (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring Cost and Reserve
Restructuring charges	$ 0	$ 0	$ 39,000	$ 2,206,000
Restructuring Reserve [Roll Forward]
Restructuring charges	0	0	39,000	2,206,000
2013 Plan
Restructuring Cost and Reserve
Restructuring charges			39,000
Restructuring Reserve [Roll Forward]
Balance at December 31, 2013			1,865,000
Restructuring charges			39,000
Payments			(1,904,000)
Balance at June 30, 2014	0		0
2013 Plan | Minimum
Restructuring Cost and Reserve
Company estimate of the aggregate restructuring cost			3,000,000
2013 Plan | Maximum
Restructuring Cost and Reserve
Company estimate of the aggregate restructuring cost			4,000,000
2013 Plan | Employee Severance and Related Benefits
Restructuring Cost and Reserve
Restructuring charges			39,000
Restructuring Reserve [Roll Forward]
Balance at December 31, 2013			1,732,000
Restructuring charges			39,000
Payments			(1,771,000)
Balance at June 30, 2014	0		0
2013 Plan | Facilities
Restructuring Cost and Reserve
Restructuring charges			0
Restructuring Reserve [Roll Forward]
Balance at December 31, 2013			133,000
Restructuring charges			0
Payments			(133,000)
Balance at June 30, 2014	$ 0		$ 0