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v3.21.1

Debt (Details Textual) - USD ($) | May 28, 2020 | Mar. 23, 2016 | Mar. 31, 2021 | Dec. 31, 2020
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Debt [Line Items] |  |  |  |
Amount outstanding under the line of credit |  |  | $ 20,000,000 | $ 0
Prime Rate | Minimum |  |  |  |
Debt [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.75% |  |  |
Prime Rate | Maximum |  |  |  |
Debt [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.25% |  |  |
Non-Prime Rate | Minimum |  |  |  |
Debt [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |
Non-Prime Rate | Maximum |  |  |  |
Debt [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.00% |  |  |
6.50% Notes due 2024 |  |  |  |
Debt [Line Items] |  |  |  |
Interest rate, stated percentage |  |  | 7.50% |
Senior Notes | 6.50% Notes due 2024 |  |  |  |
Debt [Line Items] |  |  |  |
Aggregate principal amount |  | $ 900,000,000 |  |
Percentage of redemption price, change in ownership controllatest for redemption at face amount |  | 101.00% |  |
Percentage of redemption price, redemption date, latest for redemption at face amounttion Price, Redemption Date, Latest For Redemption At Face Amount |  | 100.00% |  |
Line of Credit [Member] |  |  |  |
Debt [Line Items] |  |  |  |
Maximum borrowing capacity |  |  | $ 211,500,000 |
Letter of Credit |  |  |  |
Debt [Line Items] |  |  |  |
Maximum borrowing capacity |  |  | $ 19,151,000 | $ 18,651,000

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- Definition The percentage of the face amount of the debt instrument applicable to the change in ownership. + References No definition available. + Details
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- Definition Debt instrument, percentage of redemption price, redemption date, latest for redemption at face amount + References No definition available. + Details
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- 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. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the noncurrent portion 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 470 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600 + Details
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