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Debt Arrangements - Additional Information (Detail) € in Millions |  |  |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 25, 2019 USD ($) | Mar. 13, 2018 USD ($) | Aug. 22, 2016 | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 EUR (€) | Dec. 31, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Increased borrowing capacity |  | $ 65,000,000 |  |  |  |  |
Extended debt instrument date |  | Jun. 30, 2021 | Jun. 30, 2019 |  |  |  |
Debt to earnings before Interest, Taxes and Depreciation ratio |  | 225.00% |  |  |  |  |
Line of credit utilized borrowing capacity |  |  |  | $ 38,100,000 |  |  |
Line of credit remaining borrowing capacity |  |  |  | 26,900,000 |  |  |
Proceeds from long-term debt |  |  |  | $ 55,636,000 | $ 35,272,000 |  |
U.S. [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate for Line of credit |  |  |  | 3.523% |  | 3.523% |
Asia Pacific [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Restricted cash used to secure bank debt |  |  |  | $ 300,000 |  |  | $ 300,000
LIBOR [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate of LIBOR plus |  | 1.125% |  |  |  |  |
LIBOR [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate of LIBOR plus |  | 1.50% |  |  |  |  |
Polish Subsidiary [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Borrowings |  |  |  | $ 2,200,000 |  |  |
Interest rate for Line of credit |  |  |  | 2.765% |  | 2.765% |
Polish Subsidiary [Member] | Warsaw Interbank Offer Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate of LIBOR plus |  |  |  | 1.125% |  |  |
Expiration date |  |  |  | Jun. 30, 2021 |  |  |
Australian subsidiary [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Borrowings |  |  |  | $ 6,300,000 |  |  |
Expiration date |  |  |  | Jun. 30, 2021 |  |  |
Interest rate for Line of credit |  |  |  | 2.515% |  | 2.515% |
Austrian Subsidiary [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit utilized borrowing capacity |  |  |  | $ 1,100,000 |  | € 1.0 |
Expiration date |  |  |  | May 31, 2020 |  |  |
Austrian Subsidiary [Member] | Line Credit [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  |  |  | 1.20% |  | 1.20% |
Indonesian Subsidiary [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit utilized borrowing capacity |  |  |  | $ 7,900,000 |  |  |
Expiration date | Apr. 30, 2024 |  |  |  |  |  |
Interest rate | 3.501% |  |  |  |  |  |
Proceeds from long-term debt | $ 8,000,000 |  |  |  |  |  |
Outstanding letters of credit, current |  |  |  | $ 800,000 |  |  |

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- Definition Contractual interest rate for funds borrowed, under the debt 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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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