Annual report pursuant to Section 13 and 15(d)

Income Tax - Additional Information (Details)

v3.10.0.1
Income Tax - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Taxes Additional Information [Line Items]                      
Income tax (expense) benefit $ (1,034,000) $ (939,000) $ (153,000) $ (18,000) $ (766,000) $ (5,000) $ (83,000) $ (32,000) $ (2,144,000) $ (885,000) $ (141,000)
Net deferred tax liabilities 2,000,000       1,000,000       2,000,000 1,000,000  
Net operating loss carryforwards 142,000,000               142,000,000    
Deferred tax assets, operating loss carryforwards, subject to expiration 12,000,000               12,000,000    
Operating loss carryforwards, not subject to expiration 10,000,000               10,000,000    
Uncertain tax positions 0       0       0 0  
Accrued interest and penalties 0       0       0 0  
Interest and penalties recognized during the period                 0 0 0
Tax Year 2034 [Member]                      
Income Taxes Additional Information [Line Items]                      
Net operating loss carryforwards 132,000,000               132,000,000    
TRS [Member]                      
Income Taxes Additional Information [Line Items]                      
Income tax (expense) benefit                 (2,000,000) (1,000,000) $ 0
Net deferred tax liabilities $ 2,000,000       $ 1,000,000       $ 2,000,000 $ 1,000,000