STOCK-BASED COMPENSATION (Details) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012 item	Dec. 31, 2011
STOCK-BASED COMPENSATION
Number of active plans	1
Number of shares authorized	3.35
Term of plan	10 years
Non-cash compensation expense related to equity awards
Non-cash stock-based compensation expense before income taxes	$ 4,587,000	$ 3,777,000
Income tax benefit	(1,812,000)	(1,492,000)
Non-cash stock-based compensation expense after income taxes	2,775,000	2,285,000
Excess tax benefits from stock-based compensation		0
Cost of revenue
Non-cash compensation expense related to equity awards
Non-cash stock-based compensation expense before income taxes	6,000	11,000
Selling and marketing expense
Non-cash compensation expense related to equity awards
Non-cash stock-based compensation expense before income taxes	750,000	425,000
General and administrative expense
Non-cash compensation expense related to equity awards
Non-cash stock-based compensation expense before income taxes	3,205,000	3,025,000
Product development
Non-cash compensation expense related to equity awards
Non-cash stock-based compensation expense before income taxes	$ 626,000	$ 316,000

Represents the number of active plans under which future awards may be granted.

No definition available.

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- Definition

The period of time, from the grant date until the time at which the share-based [option] award expires.

+ References

No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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No definition available.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

The aggregate cash inflow comprised of the amount received from (a) employees to acquire the entity's shares under incentive awards, including stock option exercises and restricted stock arrangements, and (b) the excess tax benefit arising from such transactions.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

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