Discontinued Operation and Disposition (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Jan. 12, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Discontinued Operation and Disposition
Proceeds from sale of asset			$ 5,000
Gain on sale of a discontinued operation			887
Income (loss) from discontinued operation		$ 699	(606)	$ (2,064)
Nevada
Discontinued Operation and Disposition
Term of transition service agreement	180 days
Tax deductible goodwill and intangible assets			32,128
Tax deductible goodwill resulting in income tax benefit during the period			4,190
Income tax benefit recognized on tax deductible goodwill			1,510
Nevada | Sold
Discontinued Operation and Disposition
Proceeds from sale of asset	$ 5,000
Gain on sale of a discontinued operation			887
Income tax benefit from gain on discontinued operation			1,926
Income (loss) from discontinued operation			(606)
Income tax expense (benefit) on income (loss) from discontinued opration			$ (404)
Nevada | Held-for-sale
Discontinued Operation and Disposition
Carrying value of inventory					$ 3,128
Carrying value of plant, equipment and leasehold improvements					$ 2,910
Income (loss) from discontinued operation		699		(2,064)
Income tax expense (benefit) on income (loss) from discontinued opration		$ 374		$ (1,108)