Condensed Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net loss	$ (6,484)	$ (5,427)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	1,128	784
Share-based compensation expense	475	302
Provision for doubtful accounts	(43)	250
Deferred income taxes	365	(164)
Loss on disposition of property and equipment	0	17
Changes in operating assets and liabilities:
Accounts receivable	551	(1,593)
Inventories	(4,902)	2,512
Other assets	(2,773)	3,281
Accounts payable	4,163	(1,818)
Accrued liabilities	(1,857)	1,916
Deferred revenue	3,230	973
Other current liabilities	0	172
Net cash (used in) provided by operating activities	(6,147)	1,205
Cash flows from investing activities:
Purchases of property and equipment	(1,176)	(2,116)
Release of restricted time deposits	(1)	(4)
Net cash used in investing activities	(1,177)	(2,120)
Cash flows from financing activities:
Shares repurchased for tax withholdings on vesting of restricted stock awards	(54)	0
Purchase of treasury shares	0	(1,356)
Borrowings on short-term debt	12,392	3,102
Payments on short-term debt	(10,297)	(5,535)
Net cash provided by (used in) financing activities	2,041	(3,789)
Effect of exchange rate changes on cash and cash equivalents	12	43
Net decrease in cash and cash equivalents	(5,271)	(4,661)
Cash and cash equivalents, beginning of period	27,591	40,609
Cash and cash equivalents, end of period	22,320	35,948
Supplemental disclosure of cash flow information:
Cash paid during period for interest	145	169
Cash paid during period for income taxes	$ 625	$ 0