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Schedule II - Valuation And Qualifying Accounts | 12 Months Ended
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Dec. 31, 2018
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation And Qualifying Accounts | Schedule II – Valuation and Qualifying Accounts ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Balance at January 1 |  | Additions |  | Deductions |  | Balance at December 31
﻿Allowance for doubtful accounts |  |  |  |  |  |  |  |  |  |  |  |
﻿2018 |  | $ | 1,088 |  | $ | 658 |  | $ | 698 |  | $ | 1,048
﻿2017 |  | $ | 828 |  | $ | 320 |  |  | 60 |  | $ | 1,088
﻿2016 |  | $ | 426 |  | $ | 1,010 |  |  | 608 |  | $ | 828
﻿Tax valuation allowance |  |  |  |  |  |  |  |  |  |  |  |
﻿2018 |  | $ | 6,870 |  | $ | — |  |  | 150 |  | $ | 6,720
﻿2017 |  | $ | 10,593 |  | $ | — |  |  | 3,723 |  | $ | 6,870
﻿2016 |  | $ | 11,530 |  | $ | — |  |  | 937 |  | $ | 10,593

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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