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STOCK OPTIONS - Share based compensation (Details) - $ / shares				12 Months Ended
	Dec. 27, 2016	Nov. 02, 2016	Sep. 09, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2009	Dec. 31, 2008
Stock Option Plan 2008
STOCK OPTIONS
Shares available for future issuance				2,350,492
Non-qualified stock option
STOCK OPTIONS
Expire term				10 years
Number of options
Exercised (in shares)				(1,046,580)	(272,477)	(418,195)
Weighted-Average Exercise Price
Granted (in dollars per share)							$ 1.30	$ 0.81
Non-qualified stock option | Maximum
STOCK OPTIONS
Vesting period				3 years
Non-qualified stock option | Director, officer, and employee
STOCK OPTIONS
Shares terminated				10,970	1,690	15,700
Exercisable (in shares)				1,218,519	2,125,069	2,386,736
Exercisable (in dollars per share)				$ 1.06	$ 0.94	$ 0.95
Number of options
Outstanding at beginning of period (in shares)				2,125,069	2,386,736	2,820,631
Granted (in shares)				750,400
Exercised (in shares)				(1,046,580)	(259,977)	(418,195)
Forfeited (in shares)				(10,970)	(1,690)	(15,700)
Outstanding at end of period (in shares)				1,817,919	2,125,069	2,386,736
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)				$ 0.94	$ 0.95	$ 0.95
Granted (in dollars per share)				2.18
Exercise price (in dollars per share)				(0.82)	(1.05)	(0.95)
Forfeited (in dollars per share)				(1.08)	(1.30)	(1.37)
Outstanding at end of period (in dollars per share)				$ 1.52	$ 0.94	$ 0.95
Non-qualified stock option | Employees
STOCK OPTIONS
Options issued (in shares)					0	0
Number of options
Granted (in shares)				600,400
Non-qualified stock option | Non-employee directors
STOCK OPTIONS
Options issued (in shares)					0	0
Number of options
Granted (in shares)				150,000
Non-qualified stock option | Non Employees
STOCK OPTIONS
Exercisable (in shares)				57,500	57,500	70,000
Exercisable (in dollars per share)				$ 0.81	$ 0.81	$ 0.81
Number of options
Outstanding at beginning of period (in shares)				57,500	70,000	70,000
Exercised (in shares)					(12,500)
Outstanding at end of period (in shares)				57,500	57,500	70,000
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)				$ 0.81	$ 0.81	$ 0.81
Exercise price (in dollars per share)					(0.81)
Outstanding at end of period (in dollars per share)				$ 0.81	$ 0.81	$ 0.81
Non-qualified stock option | Stock Option Plan 2008
STOCK OPTIONS
Shares of common stock authorized for exercise of options				6,000,000
Number of options
Granted (in shares)				3,649,508
Outstanding at end of period (in shares)				1,875,419
Stock options
STOCK OPTIONS
Vesting period			1 year
Exercisable (in shares)			500,400
Exercisable (in dollars per share)			$ 1.783
Weighted-Average Exercise Price
Exercise price (in dollars per share)			$ (2.75)
Stock options | Thomas J. Shaw
STOCK OPTIONS
Shares terminated	3,000,000
Number of options
Granted (in shares)		3,000,000
Forfeited (in shares)	(3,000,000)

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

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

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Number of share instruments newly issued under a share-based compensation plan.

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

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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