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Schedule II - Valuation and Qualifying Accounts (Tables) | 12 Months Ended
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Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract] |
Summary of Valuation Allowance [Table Text Block] |
Col. A |  | Col. B |  |  | Col. C |  |  | Col. D |  |  | Col. E |
|  |  |  |  |  | Additions |  |  |  |  |  |  |  |  |
Description |  | Balance at Beginning of Period |  |  | (1) Charged to Costs and Expenses |  |  | (2) Charged to Other Accounts (a) |  |  | Deductions(b) |  |  | Balance at End of Period |
Year Ended December 31, 2014: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 730 |  |  | $ | 1,356 |  |  | $ | 290 |  |  | $ | (709 | ) |  | $ | 1,667 |
Valuation allowance for deferred tax assets |  | $ | 2,748 |  |  | $ | 3 |  |  | $ | - |  |  | $ | (699 | ) |  | $ | 2,052 |
Year Ended December 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 2,064 |  |  | $ | 432 |  |  | $ | - |  |  | $ | (1,766 | ) |  | $ | 730 |
Valuation allowance for deferred tax assets |  | $ | 3,157 |  |  | $ | 92 |  |  | $ | - |  |  | $ | (501 | ) |  | $ | 2,748 |
Year Ended December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 2,314 |  |  | $ | 140 |  |  | $ | - |  |  | $ | (390 | ) |  | $ | 2,064 |
Valuation allowance for deferred tax assets |  | $ | 4,620 |  |  | $ | 4 |  |  | $ | - |  |  | $ | (1,467 | ) |  | $ | 3,157 |

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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Valuation Allowance -URI http://asc.fasb.org/extlink&oid=6528051 + Details
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- Details
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