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.

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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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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 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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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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STOCKHOLDERS' EQUITY, Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Stock-based Compensation [Abstract]
Impact of stock-based compensation cost on net earnings	$ (1,339)	$ (944)	$ (3,996)	$ (2,775)
Share-based Compensation [Abstract]
Shares available for future awards (in shares)	1,369,804		1,369,804
Stock Options [Member]
Share-based Compensation [Abstract]
Vesting period			3 years
Restricted Stock [Member] \| Employee [Member]
Share-based Compensation [Abstract]
Vesting period			4 years
Restricted Stock [Member] \| Non-employee Director [Member]
Share-based Compensation [Abstract]
Vesting period			4 years
Performance Shares [Member] \| Employee [Member]
Share-based Compensation [Abstract]
Vesting period			3 years
Non-Qualified Plan [Member]
Share-based Compensation [Abstract]
Expiration period of options granted			10 years
ISO Plan [Member]
Share-based Compensation [Abstract]
Expiration period of options granted			10 years
Cost of Sales [Member]
Stock-based Compensation [Abstract]
Stock-based compensation cost	$ 242	174	$ 729	318
Operating Expenses [Member]
Stock-based Compensation [Abstract]
Stock-based compensation cost	$ 1,507	$ 1,288	$ 4,479	$ 4,028