Debt Instrument, Debt Covenants, Liquidity Threshold

No definition available.

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- Definition

Debt Instrument, Debt Covenants, Minimum Aggregate Appraised Value Plus Liquidity Threshold

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Covenants, Tangible Net Worth Plus Unrestricted Cash Multiplier

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Interest Payable Amount Outstanding Threshold

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Paragraph 1
-Subparagraph (SX 210.9-04(8))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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+ Details

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Period Type:	instant

- 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/presentationRef
-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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Period Type:	duration

- 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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Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- 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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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+ 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

+ Details

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- Details

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- Details

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Credit Facility and Convertible Debentures - Credit Arrangements Narrative (Detail)	1 Months Ended	3 Months Ended	6 Months Ended
	May 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Debt Instrument [Line Items]
Proceeds from credit facility			$ 50,000,000	$ 0
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 75,000,000
Debt instrument, face amount		$ 50,000,000.0	$ 50,000,000.0
Proceeds from credit facility	$ 44,300,000
Debt instrument, term (in years)	3 years
Interest payable amount outstanding threshold	$ 50,000,000
Commitment fee percentage	0.75%
Liquidity threshold	$ 20,000,000
Unrestricted cash multiplier		1.75	1.75
Minimum aggregate appraised value plus liquidity threshold	$ 350,000,000
Unamortized discount		$ 2,500,000	$ 2,500,000
Unamortized debt issuance expense		3,000,000	3,000,000
Long-term debt		44,500,000	44,500,000
Amortization of debt issuance costs		$ 200,000	$ 200,000
Debt instrument, interest rate, effective percentage		14.30%	14.30%
Revolving Credit Facility \| Line of Credit \| Interest Rate Application B
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Revolving Credit Facility \| Line of Credit \| Interest Rate Application B \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	7.50%
Revolving Credit Facility \| Line of Credit \| London Interbank Offered Rate (LIBOR) \| Interest Rate Application A
Debt Instrument [Line Items]
Basis spread on variable rate	8.50%
Revolving Credit Facility \| Line of Credit \| London Interbank Offered Rate (LIBOR) \| Interest Rate Application A \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility \| Line of Credit \| London Interbank Offered Rate (LIBOR) \| Interest Rate Application B
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility \| Line of Credit \| Federal Funds Effective Swap Rate \| Interest Rate Application B
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%