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Long-Term Debt and Short-Term Borrowings (Tables) | 9 Months Ended
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Sep. 30, 2021
Long-Term Debt and Short-Term Borrowings |
Schedule of Long-term debt and short-term borrowings | Long-term debt and short-term borrowings are summarized as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2021 |  | December 31, 2020
​ |  | (in thousands, except payment data)
Mortgage notes | ​ | $ | 24,478 | ​ | $ | 24,482
Senior notes | ​ |  | 90,000 | ​ |  | 100,000
Unsecured term note due February 2025, with monthly principal and interest payments of $39,110, bearing interest at 5.75% | ​ |  | 1,452 | ​ |  | 1,735
Convertible senior notes | ​ | ​ | 100,050 | ​ | ​ | 100,050
Payroll Protection Program loans | ​ | ​ | 3,426 | ​ | ​ | 3,424
Revolving credit agreement | ​ |  | 33,000 | ​ |  | —
Debt issuance costs | ​ |  | (4,083) | ​ |  | (3,684)
Total debt, net of debt issuance costs | ​ |  | 248,323 | ​ |  | 226,007
Less current maturities, net of issuance costs | ​ |  | 11,712 | ​ |  | 10,548
Less debt discount | ​ | ​ | — | ​ | ​ | 22,423
Long-term debt | ​ | $ | 236,611 | ​ | $ | 193,036
​ | ​ | ​ | ​ | ​ | ​ | ​
Short-term borrowings | ​ | ​ | 49,796 | ​ | ​ | 87,194
Total debt and short-term borrowings, net of issuance costs | ​ | $ | 298,119 | ​ | $ | 313,201
Summary of cumulative effect adjustment upon adoption | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at |  | ​ | ​ |  | ​ | ​
​ | ​ | December 31, | ​ | Cumulative | ​ | Balance at
​ |  | 2020 |  | adjustment |  | January 1, 2021
​ | ​ | (in thousands)
Long-term debt | ​ | $ | 193,036 | ​ | $ | 21,393 | ​ | $ | 214,429
Deferred income taxes | ​ |  | 33,429 | ​ |  | (5,584) | ​ |  | 27,845
Capital in excess of par | ​ |  | 153,529 | ​ |  | (16,511) | ​ |  | 137,018
Retained earnings | ​ |  | 331,897 | ​ |  | 702 | ​ |  | 332,599

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