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v3.10.0.1

Borrowings (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2012 USD ($) | Sep. 30, 2018 USD ($) item $ / shares | Sep. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) | Feb. 28, 2017 USD ($) | Dec. 31, 2016 USD ($) | Nov. 30, 2016 USD ($)
Borrowings |  |  |  |  |  |  |
Borrowings outstanding |  | $ 166,000 |  | $ 113,000 |  |  |
Components of long-term debt |  |  |  |  |  |  |
Term loans |  | 1,718 |  | 2,114 |  |  |
Other long-term debt |  | 1,876 |  | 1,658 |  |  |
Total |  | 253,284 |  | 251,242 |  |  |
Less current portion of long-term debt |  | (2,326) |  | (2,262) |  |  |
Long-term portion of debt |  | 250,958 |  | 248,980 |  |  |
Revolving Credit Facility |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 525,000 | $ 450,000
Sub limit available for letters of credit |  | $ 300,000 |  |  |  |  |
Unused commitment fee (as a percent) |  | 0.20% |  |  |  |  |
Borrowings outstanding |  | $ 166,000 |  |  |  |  |
Amount outstanding under lines of credit facilities |  | 59,100 |  |  |  |  |
Available credit facility |  | $ 299,900 |  |  |  |  |
Revolving Credit Facility | Minimum |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Unused commitment fee (as a percent) |  | 0.20% |  |  |  |  |
Revolving Credit Facility | Maximum |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Increase in the credit agreement's borrowing capacity available under certain circumstances |  | $ 250,000 |  |  |  |  |
Unused commitment fee (as a percent) |  | 0.30% |  |  |  |  |
Revolving Credit Facility | LIBOR |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Interest rate margin (as a percent) |  | 1.50% |  |  |  |  |
Revolving Credit Facility | LIBOR | Minimum |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Interest rate margin (as a percent) |  | 1.25% |  |  |  |  |
Revolving Credit Facility | LIBOR | Maximum |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Interest rate margin (as a percent) |  | 2.00% |  |  |  |  |
1.25% Convertible Senior Notes Due 2022 |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Principal amount |  | $ 287,500 |  |  | $ 287,500 |  |
Interest rate (as a percentage) |  | 1.25% |  |  | 1.25% |  |
Conversion ratio |  | 9.3056 |  |  |  |  |
Conversion price | $ / shares |  | $ 107.46 |  |  |  |  |
Premium on stock price |  | 38.50% |  |  |  |  |
Threshold percentage of stock price |  | 130.00% |  |  |  |  |
Number of trading days | item |  | 20 |  |  |  |  |
Number of consecutive trading days | item |  | 30 |  |  |  |  |
Principal amount of the notes to be repurchased (as a percentage) |  | 100.00% |  |  |  |  |
Liability component of convertible debt |  | $ 242,400 |  |  |  |  |
Equity component of convertible debt |  | 45,100 |  |  |  |  |
Debt issuance costs |  | 7,700 |  |  |  |  |
Debt Component of debt issuance costs |  | 6,500 |  |  |  |  |
Equity component of debt issuance costs |  | 1,200 |  |  |  |  |
Total interest expense |  | 3,100 | $ 3,000 |  |  |  |
Contractual interest expense |  | 900 | 900 |  |  |  |
Amortization of debt discount |  | 1,900 | 1,800 |  |  |  |
Amortization of debt issuance costs |  | 300 | $ 300 |  |  |  |
Unamortized debt discount |  | $ 33,206 |  | 35,133 |  |  |
Effective interest rate (as a percent) |  | 4.50% |  |  |  |  |
Unamortized debt issuance costs |  | $ 4,604 |  | 4,897 |  |  |
Stock price per share | $ / shares |  | $ 76.31 |  |  |  |  |
Components of long-term debt |  |  |  |  |  |  |
Principal amount |  | $ 287,500 |  | 287,500 |  |  |
Unamortized discount |  | (33,206) |  | (35,133) |  |  |
Unamortized debt issuance costs |  | (4,604) |  | (4,897) |  |  |
Total |  | 249,690 |  | $ 247,470 |  |  |
Bank lines of credit |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Amount outstanding under lines of credit facilities |  | 60,400 |  |  |  |  |
Available credit facility |  | $ 7,900 |  |  |  |  |
Seven-year term loan due in fiscal 2020 |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Principal amount | $ 11,100 |  |  |  |  |  |
Effective interest rate (as a percent) | 2.20% |  |  |  |  |  |
Term of loan | 7 years |  |  |  |  |  |
Seven-year term loan due in fiscal 2020 | LIBOR |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |
Interest rate margin (as a percent) | 1.25% |  |  |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: 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 Reference 3: 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 4: 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 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 3: 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 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 Percentage of principal amount of debt redeemed. + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + 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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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: 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(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: 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 4: 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 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, the carrying value as of the balance sheet date of notes payable to banks, excluding mortgage notes, initially due beyond one year or beyond the operating cycle if longer. + References Reference 1: 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(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 3: 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 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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