Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value [Abstract]

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term [Abstract]

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Grant [Roll Forward]

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No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

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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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- Definition

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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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- Definition

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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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (d)(2)
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- Definition

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.

+ References

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- Definition

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

+ References

No definition available.

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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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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 2
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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

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

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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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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-Publisher FASB
-Name Accounting Standards Codification
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- References

No definition available.

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

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No definition available.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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No definition available.

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

+ References

No definition available.

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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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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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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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- Definition

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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- Definition

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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No definition available.

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Number of share options (or share units) exercised during the current period.

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STOCK-BASED COMPENSATION - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 01, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Shares Available for Grant
Options granted (shares)		0
Options canceled (shares)		542,265
Number of Shares
Beginning balance (shares)	6,219,774	6,219,774
Options granted (shares)		0
Options exercised (shares)		(124,144)
Options forfeited (shares)		(542,265)
Ending balance (shares)		5,553,365		6,219,774
Options Exercisable (shares)		4,098,387
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 6.15	$ 6.15
Options granted (in dollars per share)		0.00
Options exercised (in dollars per share)		1.66
Options forfeited (in dollars per share)		6.95
Ending balance (in dollars per share)		6.17		$ 6.15
Options exercisable (in dollars per share)		$ 5.84
Weighted Average Remaining Contractual Life
Weighted average remaining contractual life, period start		5 years 11 months 16 days		6 years 5 months 1 day
Weighted average remaining contractual life, period end		5 years 11 months 16 days		6 years 5 months 1 day
Weighted average life, options exercisable		5 years 1 month 24 days
Aggregate Intrinsic Value
Aggregate intrinsic value, period start	$ 6,056	$ 6,056
Aggregate intrinsic value, period end		3,547		$ 6,056
Aggregate intrinsic value, options exercisable		3,527
Weighted average grant date fair value per share of stock options (in dollars per share)			$ 2.62
Aggregate grant date fair value			$ 200
Total intrinsic value of options exercised		400	400
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		$ 4,800	$ 5,800
2014 Equity Incentive Plan
Shares Available for Grant
Beginning balance (shares)	5,116,753	5,116,753
Authorized (shares)	2,612,263	2,612,263
Options granted (shares)		0
Options canceled (shares)		542,265
Awards granted (shares)		(804,691)
Awards canceled (shares)		847,391
Ending balance (shares)		8,313,981		5,116,753
Number of Shares
Options granted (shares)		0
Options forfeited (shares)		(542,265)