Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net income	$ 4,885	$ 7,751
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	2,061	2,298
Deferred taxes	480	97
Stock-based compensation expense	2,079	3,055
Provision for excess and obsolete inventory	815	537
Changes in operating assets & liabilities:
Accounts receivable	(26,448)	516
Inventories	(1,540)	(19,381)
Prepaid expenses and other current assets	(3,054)	(2,205)
Accounts payable and other current liabilities	3,721	21,213
Deferred revenue	5,875	1,671
Income taxes	50	104
Other assets and liabilities	(5,629)	(3,888)
Net cash (used in) provided by operating activities	(16,705)	11,768
Cash flows from investing activities
Expenditures for property, plant, and equipment	(1,859)	(672)
Net cash used in investing activities	(1,859)	(672)
Cash flows from financing activities
Decrease in restricted cash	74	760
Financing fees and other expenses	(117)	(847)
Principal payments on term Loan		(14,530)
Principal payments on sale leaseback obligation		(392)
Proceeds from sale leaseback obligation		48,940
Proceeds from exercise of stock options	556	1,665
Proceeds from Employee Stock Purchase Plan		213
Net cash provided by financing activities	513	35,809
Effect of exchange rate changes on cash and cash equivalents	143	427
Net (decrease) increase in cash and cash equivalents	(17,908)	47,332
Cash and cash equivalents at beginning of period	78,889	30,753
Cash and cash equivalents at end of period	60,981	78,085
Supplemental disclosure of total cash, cash equivalents and restricted cash:
Cash and cash equivalents at end of period	60,981	78,085
Restricted cash at end of period	6,862	65
Total cash, cash equivalents and restricted cash at end of period	$ 67,843	$ 78,150