Equity - Narrative (Details) $ / shares in Units, $ in Thousands							1 Months Ended	6 Months Ended
	Mar. 15, 2017 USD ($)	Jan. 31, 2017 shares	Jan. 08, 2017 shares	Aug. 01, 2016 $ / shares shares	Jun. 08, 2016	Apr. 01, 2016	Jan. 31, 2017 shares	Jun. 30, 2017 USD ($) $ / shares shares		Jun. 30, 2016 USD ($)	[2]	May 23, 2017 USD ($)	Dec. 31, 2016 USD ($) shares	Aug. 23, 2016 $ / shares
Class of Stock [Line Items]
Treasury stock (shares)								59,726					0
Total cost of shares repurchased | $													$ 0
Proceeds from issuance of Series A Preferred Stock, net of issuance costs paid | $	$ 39,000							$ 37,937	[1]	$ 0
Preferred stock shares outstanding (shares)								1,610,000					0
Preferred stock shares issued (shares)								1,610,000					0
Conversion of stock exchange ratio								1
Common Class A
Class of Stock [Line Items]
Common stock shares outstanding (shares)								13,175,356					12,993,118
Common stock voting rights								1
Conversion of stock exchange ratio					1,000	1,000
Common Class B
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares				$ 10										$ 10
Common stock shares outstanding (shares)								21,485,126					20,449,484
Common stock voting rights								1
Common Class B | Provider Companies
Class of Stock [Line Items]
Number of shares issued for acquisition (shares)				1,399,484
Common Class B | CenStar Note
Class of Stock [Line Items]
Number of shares from conversion (shares)			269,462
Common Class B | Censtar Convertible Debt
Class of Stock [Line Items]
Number of shares from conversion (shares)		766,180	269,462				766,180
Share Repurchase Program
Class of Stock [Line Items]
Share price (in dollars per share) | $ / shares								$ 21.52
Share Repurchase Program | Common Class A
Class of Stock [Line Items]
Share repurchase program, amount authorized | $												$ 50,000
Treasury stock (shares)								59,726
Total cost of shares repurchased | $								$ 1,300

[1] Financial information has been recast to include results attributable to the acquisition of Perigee Energy, LLC by an affiliate on February 3, 2017. See Notes 2 and 3 "Basis of Presentation and Summary of Significant Accounting Policies" and "Acquisitions," respectively, for further discussion.

[2] Financial information has been recast to include results attributable to the acquisition of the Major Energy Companies by an affiliate on April 15, 2016. See Notes 2 and 3 "Basis of Presentation and Summary of Significant Accounting Policies" and "Acquisitions," respectively, for further discussion.