Number of persons employed by the Entity

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- Definition

Number of Officers

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-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).

+ References

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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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).

+ References

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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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Stock-Based Compensation (Stock Option Grants) (Details)			6 Months Ended	12 Months Ended
	Mar. 30, 2015 executive_officer shares	May 29, 2008	Dec. 31, 2015 shares	Dec. 31, 2016 $ / shares shares	Dec. 31, 2015 $ / shares shares	Dec. 31, 2014 $ / shares shares	Mar. 31, 2016 executive_officer	Sep. 30, 2015 employee	Sep. 30, 2014 employee
Employee Group 1 [Member]
Summary of stock option grants
Vesting Period				3 years
Stock options [Member]
Summary of stock option grants
Number of Options Granted (shares) \| shares				462,917
Weighted Average Exercise Price (usd per share)				$ 4.80
Stock options [Member] \| Director Group 1 [Member]
Summary of stock option grants
Number of Options Granted (shares) \| shares				195,417	249,273	51,276
Weighted Average Exercise Price (usd per share)				$ 5.01	$ 4.49	$ 6.45
Weighted Average Grant Date Fair Value (usd per share)				$ 2.71	$ 2.44	$ 1.89
Stock options [Member] \| Director Group 1 [Member] \| Maximum [Member]
Summary of stock option grants
Vesting Period				1 year	1 year	1 year
Stock options [Member] \| Employee Group 1 [Member]
Summary of stock option grants
Number of Options Granted (shares) \| shares				35,000	17,092	1,480,000
Vesting Period				3 years	3 years	3 years
Weighted Average Exercise Price (usd per share)				$ 4.80	$ 3.99	$ 6.99
Weighted Average Grant Date Fair Value (usd per share)				2.66	$ 1.33	$ 1.81
Stock options [Member] \| Employee Group 1 [Member] \| Vest June 27, 2015 [Member]
Summary of stock option grants
Weighted Average Exercise Price (usd per share)				6.36
Stock options [Member] \| Employee Group 1 [Member] \| Vest June 27, 2016 [Member]
Summary of stock option grants
Weighted Average Exercise Price (usd per share)				6.99
Stock options [Member] \| Employee Group 1 [Member] \| Vest June 27, 2017 [Member]
Summary of stock option grants
Weighted Average Exercise Price (usd per share)				$ 7.63
Stock options [Member] \| Employee Inducement [Member]
Summary of stock option grants
Number of Options Granted (shares) \| shares				232,500	135,000	270,000
Vesting Period				3 years	3 years	3 years
Weighted Average Exercise Price (usd per share)				$ 4.61	$ 5.51	$ 6.64
Weighted Average Grant Date Fair Value (usd per share)				$ 2.60	1.42	1.71
Number of employees \| employee								3	2
Performance-based restricted stock units [Member]
Summary of stock option grants
Number of Shares Granted (shares) \| shares				1,550,750
Weighted Average Grant Date Fair Value (usd per share)				$ 4.86	$ 4.00	$ 6.29
Equity Incentive Plan [Member] \| Stock options [Member]
Summary of stock option grants
Vesting Period		3 years
Equity Incentive Plan [Member] \| Performance-based restricted stock units [Member] \| Director Group 1 [Member]
Summary of stock option grants
Number of Shares Granted (shares) \| shares					4,273	51,276
Weighted Average Grant Date Fair Value (usd per share)					$ 4.02	$ 6.45
Equity Incentive Plan [Member] \| Performance-based restricted stock units [Member] \| Director Group 1 [Member] \| Maximum [Member]
Summary of stock option grants
Vesting Period				1 year	1 year	1 year
Equity Incentive Plan [Member] \| Performance-based restricted stock units [Member] \| Director Group 2 [Member]
Summary of stock option grants
Number of Shares Granted (shares) \| shares					17,092
Vesting Period					3 years
Weighted Average Grant Date Fair Value (usd per share)					$ 3.99
Equity Incentive Plan [Member] \| Performance-based restricted stock units [Member] \| Employee Group 1 [Member]
Summary of stock option grants
Number of Shares Granted (shares) \| shares	1,325,000		1,168,333	1,250,750	2,493,333	120,000
Vesting Period				2 years	2 years	3 years
Weighted Average Grant Date Fair Value (usd per share)				$ 4.88	$ 3.99	$ 6.36
Number of officers \| executive_officer	8						5
Equity Incentive Plan [Member] \| Performance-based restricted stock units [Member] \| Employee Inducement [Member]
Summary of stock option grants
Number of Shares Granted (shares) \| shares				100,000	10,000	70,000
Vesting Period				3 years	3 years	3 years
Weighted Average Grant Date Fair Value (usd per share)				$ 4.94	$ 5.29	$ 6.04
Number of employees \| employee									2
Equity Incentive Plan Year [Member] \| Performance-based restricted stock units [Member] \| Employee Group 1 [Member]
Summary of stock option grants
Number of officers \| executive_officer	8
Equity Incentive Plan Year [Member] \| Performance-based restricted stock units [Member] \| Employee Inducement [Member]
Summary of stock option grants
Number of employees \| employee								2