Represents the market price equivalent the Company uses for valuation of the money market investments.

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
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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.

+ References

No definition available.

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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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Period Type:	duration

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- Details

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- Details

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SIGNIFICANT ACCOUNTING POLICIES - Financial Instruments (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
FAIR VALUE MEASUREMENTS
Outstanding amount of debt		$ 489,355	$ 572,660
Redemption of Senior Notes	$ 200,000	200,000
Credit Agreement \| Term Loan
FAIR VALUE MEASUREMENTS
Outstanding amount of debt		180,000	199,688
Credit Agreement \| Revolving Credit Facility
FAIR VALUE MEASUREMENTS
Outstanding amount of debt			132,000
Senior Notes due 2018
FAIR VALUE MEASUREMENTS
Outstanding amount of debt			200,000
Sellers notes
FAIR VALUE MEASUREMENTS
Outstanding amount of debt		$ 11,110	19,838
Recurring basis \| Level 1 \| Money market funds
FAIR VALUE MEASUREMENTS
Market price (in dollars per share)		$ 1
Recurring basis \| Level 1 \| Money market funds \| Other current assets
FAIR VALUE MEASUREMENTS
Fair value of assets		$ 2,300	3,900
Recurring basis \| Level 2 \| Credit Agreement \| Term Loan
FAIR VALUE MEASUREMENTS
Fair value of the debt		172,600	186,200
Recurring basis \| Level 2 \| Credit Agreement \| Term Loan B
FAIR VALUE MEASUREMENTS
Outstanding amount of debt		280,000	0
Fair value of the debt		$ 278,600
Recurring basis \| Level 2 \| Credit Agreement \| Revolving Credit Facility
FAIR VALUE MEASUREMENTS
Fair value of the debt			121,600
Recurring basis \| Level 2 \| Senior Notes due 2018
FAIR VALUE MEASUREMENTS
Fair value of the debt			$ 179,200