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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Other Than Options, Annual Number Of Shares Authorized To Non-Employee Directors

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- Definition

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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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- Definition

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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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

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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The estimated measure of the 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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- 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).

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- Definition

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 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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- Definition

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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- Definition

Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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- Definition

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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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Value, before forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP).

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Stock-Based Plans and Stock-Based Compensation - Stock-Based Plans, Stock-Based Compensation and Stock Grants (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) nonemployee_director $ / shares shares	Dec. 31, 2017 USD ($) $ / shares	Dec. 31, 2016 USD ($) $ / shares	May 31, 2014 shares
Options, Additional Disclosures [Abstract]
Weighted average per share fair value of stock options granted (in dollars per share) \| $ / shares	$ 0.00	$ 0.00	$ 4.06
Intrinsic value of stock options exercised	$ 388,000	$ 265,000	$ 223,000
Intrinsic value of fully-vested stock awards granted	992,000	1,812,000	944,000
Stock-Based Compensation Expense [Abstract]
Total Stock-based compensation expense	1,484,000	$ 1,316,000	$ 1,087,000
Unrecognized stock-based compensation expense	$ 1,700,000
Weighted average remaining vesting period	1 year 230 days
Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	0.00%	0.00%	1.66%
Dividend yield	0.00%	0.00%	0.00%
Expected life	0 years	0 years	6 years 9 months 21 days
Volatility	0.00%	0.00%	51.70%
Selling, general and administrative expense
Stock-Based Compensation Expense [Abstract]
Total Stock-based compensation expense	$ 1,334,000	$ 1,197,000	$ 1,005,000
Cost of sales
Stock-Based Compensation Expense [Abstract]
Total Stock-based compensation expense	$ 150,000	$ 119,000	$ 82,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting period	4 years
Period options are exercisable	10 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting period	3 years
Stock grants
Fair Value Assumptions and Methodology [Abstract]
Stock awards granted (in shares) \| shares	21,472
Stock grants \| Non-employee directors
Fair Value Assumptions and Methodology [Abstract]
Number of shares authorized per non-employee director (in shares) \| shares	2,534
Number of non-employee directors \| nonemployee_director	7
Stock Granted, Value, Share-based Compensation, Gross	$ 47,500
Stock grants \| Chairman of board
Fair Value Assumptions and Methodology [Abstract]
Stock awards granted (in shares) \| shares	3,734
Stock Granted, Value, Share-based Compensation, Gross	$ 70,000
2014 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Number of shares authorized (in shares) \| shares				1,000,000
Number of shares available for grant (in shares) \| shares	430,662