1. Summary of Significant Accounting Policies (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accounting Policies [Abstract]
Stock based compensation costs	$ 1,096us-gaap_ShareBasedCompensation	$ 771us-gaap_ShareBasedCompensation
Unrecognized stock-based compensation costs	12,800
Unrecognized stock-based compensation costs amortization period	2 years 9 months 18 days
Aggregate intrinsic value outstanding	32,000
Aggregate intrinsic value exercisable	25,100
Options Exercised	209	574
Total intrinsic value of options exercised	$ 1,200	$ 4,400
Shares available for future grants	2,100
Repurchase of common stock, shares repurchased		64,430
Repurchase of common stock average share price		$ 7.97

Repurchase of common stock average share price

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of share options (or share units) exercised during the current period.

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Number of shares that have been repurchased and retired during the period.

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