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Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities Included in Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Deferred tax assets [Abstract]    
Compensation $ 1,842 $ 1,529
Allowance for doubtful accounts 600 478
Lease obligations - closed clinics 34 54
Deferred tax assets 2,476 2,061
Deferred tax liabilities [Abstract]    
Depreciation and amortization (11,309) (12,590)
Other (179) (346)
Deferred tax liabilities (11,488) (12,936)
Net deferred tax liability $ (9,012) $ (10,875)