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Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Discloses use of the simplified method to calculate the expected term that stock option awards under the specified plan will exist before being exercised or terminated, the reason and justification for its use, and the periods for which the method was used if it was not used in all periods presented.

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Weighted average expected volatility rate of share-based compensation awards.

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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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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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 options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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STOCK-BASED COMPENSATION (Details - Stock Options Rollforward) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Aggregate Intrinsic Value
Share price	$ 48.34us-gaap_SharePrice
Weighted average fair value (in dollars per share)	$ 11.22		$ 3.63
Weighted average assumptions
Fair Value of Options Vested	$ 400,000	$ 3,200,000	$ 300,000
Employee Stock Option [Member]
Weighted Average Remaining Contractual Term
Outstanding at the end of the period	6 years 5 months 4 days
Options exercisable at the end of the period	3 years 7 months 18 days
Aggregate Intrinsic Value
Outstanding at the end of the period	64,492,000
Options exercisable at the end of the period	38,602,000
Intrinsic value of stock options exercised	200,000	400,000	300,000
Cash received from stock option exercised	100,000
Actual tax benefit realized	100,000
Vesting period	3 years
Stock Options
Number of Options
Outstanding at the beginning of the period (in shares)	1,038,999
Granted (in shares)	1,106,791
Exercised (in shares)	(8,361)
Forfeited (in shares)	0
Expired (in shares)	(750)
Outstanding at the end of the period (in shares)	2,136,679
Options exercisable at the end of the period (in shares)	983,107
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 8.98
Granted (in dollars per share)	$ 26.73
Exercised (in dollars per share)	$ 13.58
Forfeited (in dollars per share)	$ 0.00
Expired (in dollars per share)	$ 13.04
Outstanding at the end of the period (in dollars per share)	$ 18.16
Options exercisable at the end of the period (in dollars per share)	$ 9.07
Weighted average assumptions
Expected Term, Simplified Method			P7Y
Expected Volatility Rate, Minimum	36.00%
Expected Volatility Rate, Maximum	64.00%
Risk Free Interest Rate, Minimum	1.81%
Risk Free Interest Rate, Maximum	2.13%
Dividend yield (as a percent)	0.00%		0.00%
Volatility factor (as a percent)			45.00%
Risk-free interest rate (as a percent)			2.00%
Expected dividend payment	$ 0
Director Stock Options
Aggregate Intrinsic Value
Vesting period	2 years 0 months
Minimum [Member] \| Stock Options
Weighted average assumptions
Expected Term, Simplified Method	P5Y9M
Maximum [Member] \| Stock Options
Weighted average assumptions
Expected Term, Simplified Method	P6Y7M17D
Tranche 1 \| Employee Stock Option [Member]
Aggregate Intrinsic Value
Vesting period	2 years 6 months
Award Vesting Rights, Percentage	25.00%
Tranche 2 \| Employee Stock Option [Member]
Aggregate Intrinsic Value
Vesting period	3 years 6 months
Award Vesting Rights, Percentage	75.00%