Condensed Consolidated Statement of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Common Stock [Member]	Warrant [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
BALANCES AT at Dec. 31, 2013	$ 239,235	$ 17,946	$ 15,366	$ (12,367)	$ 260,180
BALANCES AT (in Shares) at Dec. 31, 2013	96,569,000				96,569,186
Net income			6,684		6,684
Exercise of stock options	6,038				6,038
Exercise of stock options (in Shares)	3,480,000
Employee stock purchase plan issuances	829				829
Employee stock purchase plan issuances (in Shares)	73,000
Compensation and share issuances related to restricted stock awards	438				438
Compensation and share issuances related to restricted stock awards (in Shares)	16,000
Stock-based compensation expense	4,555				4,555
Foreign currency translation adjustment				86	86
Excess tax benefit – stock compensation	32,270				32,270
Unrealized holding gain on available-for-sale securities				1,070	1,070
Conversion of warrants	26,117	(17,946)			8,171
Conversion of warrants (in Shares)	7,192,000
BALANCES AT at Sep. 30, 2014	$ 309,482		$ 22,051	$ (11,211)	$ 320,322
BALANCES AT (in Shares) at Sep. 30, 2014	107,331,000				107,330,516

Represents future tax deductions adjustments arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws ( before the valuation allowance, if any, to reduce such sum amount to net realizable value).

No definition available.