Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income	$ 14,464	$ 5,047
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization of property and equipment and intangible assets	613	514
Stock-based compensation	763	935
Provision for doubtful accounts	966	1,063
Reduction of inventory reserve	(347)
Deferred income taxes	(2,979)
Changes in operating assets and liabilities:
Trade receivables	(1,158)	(4,521)
Inventories	955	(7,367)
Prepaid expenses	423	(255)
Other current assets	(2,814)	(227)
Accounts payable	1,108	776
Accrued expenses and other current liabilities	1,406	(2,042)
Net cash provided by (used in) operating activities	13,400	(6,077)
Cash flows from investing activities:
Purchases of property and equipment	(463)	(340)
Purchases of intangible assets	(1,501)
Net cash used in investing activities	(1,964)	(340)
Cash flows from financing activities:
Principal payments under capital lease obligation	(3)	(14)
Proceeds from exercise of stock options	3	15
Debt financing costs	(5)	(14)
Net cash used in financing activities	(5)	(13)
Effects of exchange rate changes	61	592
Net increase (decrease) in cash and cash equivalents	11,492	(5,838)
Cash and cash equivalents at beginning of the year	6,724	12,562
Cash and cash equivalents at end of the year	18,216	6,724
Supplemental disclosure of cash flow information:
Interest paid	73	38
Income taxes paid	$ 223	$ 122