Business Combination (Tables)

6 Months Ended

Jun. 30, 2013

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

Purchase price (cost of shares)	$	154,735
Acquisition related costs (included in selling, general and administrative expenses)		2,075
Total purchase price	$	156,810

Schedule of Purchase Price Allocation [Table Text Block]

			Changes in
			purchase price
			allocation		Revised
	March 1, 2013		recorded		March 1, 2013
	purchase price		during second		purchase price
	allocation		quarter of 2013		allocation
Assets acquired:
Cash and cash equivalents	$	29,819	$	-	$	29,819
Accounts receivable, net		20,862		-		20,862
Inventory		42,909		-		42,909
Prepaid expenses and other current assets		27,205		-		27,205
Property, plant and equipment, net		99,716		-		99,716
Deferred tax assets		1,612		-		1,612
Other long-term assets		5,497		-		5,497
Other intangible assets		17,200		-		17,200
Goodwill		2,192		-		2,192
Total assets acquired	$	247,012	$	-	$	247,012
Liabilities assumed:
Lines of credit	$	17,336	$	-	$	17,336
Accounts payable		34,758		-		34,758
Accrued liabilities and other		16,703		-		16,703
Deferred tax liability		5,055		-		5,055
Other liabilities		18,425		-		18,425
Total liabilities assumed		92,277		-		92,277
Total net assets acquired, net of cash acquired	$	154,735	$	-	$	154,735

Business Acquisition, Pro Forma Information [Table Text Block]

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2012		2013		2012
Net revenues	$	196,076	$	412,514	$	371,767
Net income attributable to common stockholders	$	2,752	$	7,646	$	4,946
Earnings per share—Basic	$	0.06	$	0.17	$	0.11
Earnings per share—Diluted	$	0.06	$	0.16	$	0.11