Organization and Significant Accounting Policies (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Property, plant and equipment
Property, plant and equipment, gross	$ 136,431	$ 135,351
Less accumulated depreciation	(60,431)	(54,465)
Property plant and equipment excluding land, net	76,000	80,886
Land	10,198	10,198
Property, plant and equipment, net	86,198	91,084
Equipment and computer software
Property, plant and equipment
Property, plant and equipment, gross	44,698	44,109
Building and building systems
Property, plant and equipment
Property, plant and equipment, gross	48,132	48,120
Land improvements
Property, plant and equipment
Property, plant and equipment, gross	2,846	2,849
Estimated useful life	20 years
Leasehold improvements
Property, plant and equipment
Property, plant and equipment, gross	35,282	34,931
Furniture and fixtures
Property, plant and equipment
Property, plant and equipment, gross	$ 5,473	$ 5,342
Furniture and fixtures | Minimum
Property, plant and equipment
Estimated useful life	5 years
Furniture and fixtures | Maximum
Property, plant and equipment
Estimated useful life	10 years
Computer software and hardware
Property, plant and equipment
Estimated useful life	3 years
Manufacturing equipment
Property, plant and equipment
Estimated useful life	10 years
Other equipment | Minimum
Property, plant and equipment
Estimated useful life	5 years
Other equipment | Maximum
Property, plant and equipment
Estimated useful life	7 years
Building
Property, plant and equipment
Estimated useful life	40 years
Building systems and improvements | Minimum
Property, plant and equipment
Estimated useful life	10 years
Building systems and improvements | Maximum
Property, plant and equipment
Estimated useful life	25 years