Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Description of Business and Basis of Presentation (Policies)
Notes Tables
Notes Details

Notes Payable - Components of Notes Payable (Details)

v3.10.0.1

Notes Payable - Components of Notes Payable (Details) - USD ($) $ in Thousands	Jun. 30, 2018	May 22, 2018	Dec. 31, 2017	Nov. 21, 2017
Debt Instrument [Line Items]
Less: Unamortized debt issuance costs	$ (5,538)		$ (3,412)
Unamortized discount	284		424
Notes payable to KMS' former shareholders, net of $36 and $98 of unamortized discount in 2018 and 2017, respectively
Debt Instrument [Line Items]
Unamortized discount	36		98
Notes payable to SSN's former shareholders, net of $163 and $326 of unamortized discount in 2018 and 2017, respectively
Debt Instrument [Line Items]
Unamortized discount	163		326
6.5% Senior notes
Debt Instrument [Line Items]
Senior Notes	82,697		76,569
Unamortized discount	70		0
7% Senior Notes
Debt Instrument [Line Items]
Senior Notes	42,151		0
Unamortized discount	$ 15
Senior Notes \| 6.5% Senior notes
Debt Instrument [Line Items]
Interest rate	6.50%			6.50%
Senior Notes \| 7% Senior Notes
Debt Instrument [Line Items]
Interest rate	7.00%	7.00%
Notes Payable
Debt Instrument [Line Items]
Total	$ 136,171		96,849
Notes Payable \| Notes payable to clearing firm under forgivable loans
Debt Instrument [Line Items]
Long-term debt	0		2,143
Notes Payable \| Note payable under subsidiary's term loan with bank
Debt Instrument [Line Items]
Long-term debt	5,280		6,563
Notes Payable \| Note payable under subsidiary's revolver with bank
Debt Instrument [Line Items]
Long-term debt	153		216
Notes Payable \| Notes payable by subsidiary to certain former shareholders of Highland
Debt Instrument [Line Items]
Long-term debt	6,738		6,738
Notes Payable \| Notes payable to KMS' former shareholders, net of $36 and $98 of unamortized discount in 2018 and 2017, respectively
Debt Instrument [Line Items]
Long-term debt	996		1,958
Notes Payable \| Notes payable to SSN's former shareholders, net of $163 and $326 of unamortized discount in 2018 and 2017, respectively
Debt Instrument [Line Items]
Long-term debt	$ 3,694		$ 6,074

- 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.

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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.

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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.

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