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Long Term Debt (Narratives) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 31, 2018 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018 | Jan. 22, 2018
Debt Instrument [Line Items] |  |  |  |  |  |  |
Secured Debt |  | $ 54,821 |  | $ 54,821 | $ 60,795 |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 25,000 |  |  |  |  |  |
Maturity of debt instrument in years and months |  |  |  | 5 years |  |  |
Debt Instrument, Payment Terms | the outstanding term loans began to amortize in equal quarterly installments equal to $0.4 million per quarter on such date and during each of the next three quarters thereafter, $0.6 million per quarter during the next four quarters thereafter and $0.8 million per quarter thereafter, with a balloon payment at maturity. |  |  |  |  |  |
Debt Instrument Quarterly Payment Current Year |  |  |  |  |  | $ 400 |
Debt Instrument Quarterly Payment Next Year |  |  |  |  |  | 600 |
Debt Instrument Quarterly Payment Thereafter |  |  |  |  |  | $ 800 |
Limitation on pledges of capital stock of foreign subsidiaries |  | 65.00% |  | 65.00% |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  | $ 11,900
Line of Credit Facility, Remaining Borrowing Capacity |  | $ 9,500 |  | $ 9,500 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 25,000 |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding | $ 4,800 |  |  |  |  |  |
Revolving Credit Facility [Member] | Base Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Description Of Variable Rate Basis | a base rate plus 4.75% |  |  |  |  |  |
Basis Spread on Variable Rate | 4.75% |  |  |  |  |  |
Floor Interest Rate | 4.25% |  |  |  |  |  |
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt Instrument, Description Of Variable Rate Basis | London Interbank Offered Rate (LIBOR) rate plus 6.25% |  |  |  |  |  |
Basis Spread on Variable Rate | 6.25% |  |  |  |  |  |
Floor Interest Rate | 1.25% |  |  |  |  |  |
Term Loan [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Secured Debt | $ 64,000 |  |  |  |  |  |
Percentage of excess cash flow |  | 50.00% |  | 50.00% |  |  |
Prepayment of senior debt |  | $ 1,000 |  |  |  |  |
Interest Rate As Of Reporting Date |  | 8.85% |  | 8.85% |  |  |
Excess cash flow [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Prepayment of senior debt |  |  | $ 4,000 |  |  |  |
Denville Transaction [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Prepayment of senior debt |  | $ 1,000 |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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