Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended			11 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	May 28, 2010 Predecessor Company [Member]
Cash Flows From Operating Activities:
Net income	$ 1,952	$ 4,892	$ 51,190	$ 6,242
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation of property and equipment	3,685	3,351	1,933	2,136
Amortization of intangible assets	2,268	1,331	776	4
Accretion of notes payable	1,025	993	596	38
Loss on disposition of assets	39	213	624	4
Stock-based compensation	1,766	3,091	5,109	165
Excess tax benefit from stock-based compensation	33			1,147
Deferred income taxes	(1,702)	(3,272)	(71,055)	816
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(5,589)	(2,317)	(4,338)	(2,264)
Inventories	(2,391)	(11,582)	(2,908)	5,257
Prepaid and other current assets	(2,782)	1,125	122	(2,392)
Accounts payable and accrued liabilities	(1,745)	(2,892)	4,200	(1,414)
Net cash (used in) provided by operating activities	(3,441)	(5,067)	(13,751)	9,739
Cash Flows From Investing Activities:
Purchase of marketable securities			(22,065)
Proceeds from maturity and sales of marketable securities			46,124
Purchase of businesses, net of cash received	(50,327)		(82,560)
Purchase of intangible assets				(10)
Proceeds from disposition of property and equipment	31	30		13
Purchase of property and equipment	(5,496)	(2,784)	(2,086)	(1,821)
Net cash used in investing activities	(55,792)	(2,754)	(60,587)	(1,818)
Cash Flows From Financing Activities:
Net (repayments of) proceeds from long-term debt, revolving lines of credit and capital leases	(3,082)	7,260	14,595	(8,445)
Purchase of treasury stock				(689)
Proceeds from sales of treasury stock and exercise of stock options	2,761	150	1,005	1,585
Proceeds from the sale of common stock, net	62,562		2,903
Net cash provided by (used in) financing activities	62,241	7,410	18,503	(7,549)
Effect of foreign exchange rates on cash	(297)	44	239	(23)
Change in cash	2,711	(367)	(55,596)	349
Cash, beginning of period	2,400	2,767	58,363	1,271
Cash, end of period	5,111	2,400	2,767	1,620
Supplemental Disclosure of Cash Flow Information:
Cash paid (received) for income taxes	881	(46)	1,239	3,013
Cash paid for interest	1,834	1,853	1,034	555
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Stock issued for acquisitions	3,791		19,465
Notes and deferred compensation issued in acquisition			$ 13,442