Notes Payable and Other Noncurrent Liabilities - Current and Noncurrent Portions of Notes Payable (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Notes Payable and Other Noncurrent Liabilities
Less: Current portion	$ 68,145	$ 33,144
Notes payable, less current portion	58,057	74,630
Amended and restated credit agreement
Notes Payable and Other Noncurrent Liabilities
Notes payable including current portion	126,202	107,774
Less: Current portion	68,145	33,144
Notes payable, less current portion	58,057	74,630
Amended and restated credit agreement \| Term loan facility
Notes Payable and Other Noncurrent Liabilities
Quarterly payment of notes payable	8,368
Notes payable including current portion	$ 91,202	$ 107,774
Amended and restated credit agreement \| Term loan facility \| 30-Day LIBOR
Notes Payable and Other Noncurrent Liabilities
Margin on variable interest rate	2.00%	2.00%
Interest rate of notes payable	2.09%
Amended and restated credit agreement \| Revolving credit facility
Notes Payable and Other Noncurrent Liabilities
Notes payable including current portion	$ 35,000
Amended and restated credit agreement \| Revolving credit facility \| 30-Day LIBOR
Notes Payable and Other Noncurrent Liabilities
Interest rate of notes payable	4.00%

Quarterly payment of notes payable.

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.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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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.

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- Definition

Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ 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
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 210
-Section S99
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- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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