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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Deferred tax assets:    
Accrued expense $ 2,519 $ 2,854
Net operating loss carryforward 524 1,216
Deferred financing costs 260 400
Stock compensation 935 892
Tax credit carryforward 645 17
Interest limitation 1,418 8,773
Lease liability 1,899 1,728
Capital loss carryforward 2,030  
Other 2,598 669
Total gross deferred tax asset 12,828 16,549
Valuation allowance (2,615) (5,659)
Net deferred tax assets 10,213 10,890
Deferred tax liabilities:    
Plant, property and leasehold improvements (4,939) (5,382)
Intangible assets (8,689) (8,877)
Right-to-use assets (1,758) (1,486)
Prepaid expense and other (2,236) (1,511)
Total gross deferred tax liabilities (17,622) (17,256)
Net deferred tax liabilities $ (7,409) $ (6,366)