The maximum percentage of the acquisition of beneficial ownership of the Company's equity securities.

No definition available.

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- Definition

Borrowings as percentage of revolving commitment to contain financial covenant regarding maximum net leverage ratio.

+ References

No definition available.

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- Definition

Debt instrument, base floor rate.

+ References

No definition available.

+ Details

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- Definition

Debt instrument, commencement date of quarterly payments.

+ References

No definition available.

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- Definition

Debt instrument, final installment.

+ References

No definition available.

+ Details

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- Definition

Debt instrument, LIBOR floor rate.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, number of quarterly payments.

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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Balance Type:	credit
Period Type:	instant

- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

+ Details

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Period Type:	duration

- 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.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Long-Term Debt (Details Textual)		9 Months Ended
Long-Term Debt (Details Textual)	Oct. 20, 2017 USD ($) Installment	Sep. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Long-term Debt		$ 172,821,000	$ 183,442,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit		$ 27,000,000	$ 30,000,000
Former Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate terms		Borrowings under the Former Credit Agreement bore interest, at the Company’s option, at either (1) the highest of the federal funds rate plus 0.50%, the Eurodollar rate for a one-month interest period plus 1.00%, or the administrative agent’s prime rate as announced from time to time, or (2) the Eurodollar rate for the applicable interest period, plus in each case, an applicable margin based on the Company’s leverage ratio.
Debt, Weighted Average Interest Rate		3.50%
Former Credit Agreement [Member] \| Federal Funds Effective Swap Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%
Former Credit Agreement [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%
Former Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 50,000,000
Line of Credit		$ 27,000,000
Line of Credit Facility, Expiration Date		Jul. 31, 2020
Former Credit Agreement [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 160,000,000
Long-term Debt		$ 141,000,000
Debt Instrument, Maturity Date		Jul. 31, 2020
Senior Secured First Lien Credit Facility [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 900,000,000
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000,000
Line of Credit Facility, Expiration Date	Oct. 20, 2022
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Borrowings as Percentage of Revolving Commitment to Contain Financial Covenant Regarding Maximum Net Leverage Ratio	30.00%
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member] \| LIBOR rate [Member] \| Subsequent Event [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.50%
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member] \| LIBOR rate [Member] \| Subsequent Event [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member] \| Base Rate Loans [Member] \| Subsequent Event [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member] \| Base Rate Loans [Member] \| Subsequent Event [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Senior Secured First Lien Credit Facility [Member] \| Term Loan [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 800,000,000
Debt Instrument, Maturity Date	Oct. 20, 2024
Debt Instrument, Number of Quarterly Payments \| Installment	27
Debt Instrument, Periodic Payment	$ 2,000,000
Debt Instrument, Commencement Date of Quarterly Payments	Mar. 31, 2018
Debt Instrument, Final Installment	$ 746,000,000
Senior Secured First Lien Credit Facility [Member] \| Term Loan [Member] \| LIBOR rate [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Senior Secured First Lien Credit Facility [Member] \| Term Loan [Member] \| Base Rate Loans [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Senior Secured Second Lien Credit Facility [Member] \| Term Loan [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 200,000,000
Debt Instrument, Maturity Date	Oct. 20, 2025
Senior Secured Second Lien Credit Facility [Member] \| Term Loan [Member] \| LIBOR rate [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	7.00%
Senior Secured Second Lien Credit Facility [Member] \| Term Loan [Member] \| Base Rate Loans [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	6.00%
Credit Facilities [Member] \| Subsequent Event [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Beneficial Ownership Threshold	50.00%
Credit Facilities [Member] \| Federal Funds Effective Swap Rate [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Credit Facilities [Member] \| LIBOR rate [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Credit Facilities [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Base Floor Rate	1.00%
Credit Facilities [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
Credit Facilities [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Credit Facilities [Member] \| Term Loan [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Base Floor Rate	1.75%
Debt Instrument, LIBOR Floor Rate	0.75%