Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net income (loss)	$ 14,917	$ (15,008)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	3,132	1,144
Non-cash interest expense	62	50
Share-based compensation expense	982	931
Decrease in accounts receivable allowances	(250)	(4)
Increase in inventory reserves	615	820
Inventory step up to fair value	482
(Decrease) increase in valuation of private placement warrants liability	(1,190)	21,658
Decrease in valuation of contingent consideration liability	(3,782)
Loss on investment in joint venture	136
Loss on disposal of assets	77	14
Loss on debt extinguishment		270
(Increase) decrease in operating assets, net of effects of business acquisition:
Accounts receivable	(21,917)	(1,733)
Inventories	(23,398)	(10,376)
Prepaid expenses and other assets	(2,342)	8
Increase (decrease) in operating liabilities:
Accounts payable	19,549	(3,698)
Accrued compensation and benefits and other accrued liabilities	(133)	2,073
Income taxes payable	(27)	(2,126)
Other noncurrent liabilities	(363)	(40)
Net cash used in operating activities	(13,450)	(6,017)
Cash flows from investing activities
Purchases of property, plant, equipment and other assets	(4,749)	(4,322)
Acquisition of Professional Power Products, Inc., net of cash acquired	(44,122)
Investment in joint venture	(350)	(500)
Net cash used in investing activities	(49,221)	(4,822)
Cash flows from financing activities
Proceeds from stock offering		36,750
Initial proceeds from borrowings under revolving line of credit		38,995
Repayment of prior revolving line of credit		(38,945)
Proceeds from long-term debt	5,000
Proceeds from exercise of private placement warrants	1,425	3,865
Excess tax benefit from exercise of share-based awards	2,469	1,642
Payment of withholding taxes from net settlement of share-based awards	(361)	(2,063)
Payments on long-term debt	(555)
Cash paid for financing and transaction fees	(126)	(2,923)
Net cash provided by financing activities	63,967	18,628
Increase in cash	1,296	7,789
Cash at beginning of period	6,306	543
Cash at end of period	7,602	8,332
Supplemental disclosures of cash flow information
Cash paid for interest	748	567
Cash paid for income taxes	3,828	4,074
Supplemental disclosure of non-cash transactions
Unpaid property, plant, equipment and other assets	937	998
Fair value of private placement warrants exercised	7,320	5,204
Unpaid financing and transaction fees		98
Noncurrent obligation [Member]
Cash flows from financing activities
Advances from revolving line of credit	67,946	59,907
Repayment of prior revolving line of credit	$ (11,831)	$ (78,600)