Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Net operating loss carryforwards	$ 11,665	$ 12,285
Allowance for doubtful accounts	383	262
Inventory valuation reserves	1,503	1,109
Equity compensation	3,693	4,216
Intangible assets and goodwill	0	13,061
Accrued compensation	598	0
Other	1	2
Total gross deferred tax assets	17,843	30,935
Valuation allowance	(856)	(835)
Total deferred tax assets, net	16,987	30,100
Deferred tax liabilities:
Property and equipment	(12,374)	(8,227)
Intangibles & Goodwill	(9,587)	0
Convertible debt	(5,020)	(4,785)
Prepaid insurance and other	(47)	(520)
Total gross deferred tax liabilities	(27,028)	(13,532)
Net deferred tax (liabilities) assets	$ (10,041)	$ 16,568