Line of credit facility additional borrowing capacity increments thereafter.

No definition available.

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Period Type:	duration

- Definition

Line of credit facility additional borrowing capacity initial minimum amount.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility additional maximum borrowing capacity.

+ References

No definition available.

+ Details

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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.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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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://fasb.org/us-gaap/role/ref/legacyRef
-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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

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

- Definition

Description of restrictions on the entity's other assets as required by the terms of the credit facility.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(b))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Description of restrictions on the entity's ability to pay dividends as required by the terms of the credit facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ References

+ Details

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

- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

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Balance Type:	na
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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.

+ Details

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

- Details

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Line of Credit - Additional Information (Details) - Revolving Credit Facility - Bank of America, N.A, - USD ($)		12 Months Ended
	Mar. 23, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Line Of Credit Facility [Line Items]
Line of credit facility agreement date	Mar. 23, 2016
Line of credit facility expiration date	Mar. 23, 2021
Maximum amount of line of credit	$ 75,000,000
Line of credit facility interest rate description		Borrowings under the credit agreement accrue interest, at our option, at (1) a base rate equal to the highest of (a) the federal funds rate plus 0.50%, (b) the prime rate and (c) the LIBOR rate plus 1.00%, in each case plus a margin ranging from 0.25% to 0.75%, or (2) an adjusted LIBOR rate plus a margin ranging from 1.25% to 1.75%.
Outstanding borrowings		$ 0	$ 0	$ 15,100,000
Weighted-average interest rate of debt outstanding				5.00%
Line of credit facility, additional maximum borrowing capacity	25,000,000
Line of credit facility, additional borrowing capacity initial minimum amount	10,000,000
Line of credit facility, additional borrowing capacity increments thereafter	$ 5,000,000
Line of credit facility, asset restrictions		The credit agreement also contains customary covenants restricting our activities, including limitations on our ability to sell assets, engage in mergers and acquisitions, enter in transactions involving related parties, obtain letters of credit, incur indebtedness or grant liens or negative pledges on our assets, make loans or make other investments.
Line of credit facility, dividend restrictions		prohibited from paying cash dividends with respect to our capital stock
Federal Funds Rate
Line Of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	0.50%
London Interbank Offered Rate (LIBOR)
Line Of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Margin Rate \| Minimum
Line Of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	0.25%
Margin Rate \| Maximum
Line Of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	0.75%
LIBOR Rate Margin \| Minimum
Line Of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.25%
LIBOR Rate Margin \| Maximum
Line Of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.75%