Credit Arrangements (Tables)

12 Months Ended

Dec. 31, 2016

Credit Arrangements

Schedule of credit facilities and long-term debt

	2016		2015
Commercial equipment notes payable to various commercial equipment finance companies and banks with interest rates that range from 1.78% to 3.51% per annum. Monthly principal and interest payments are due in the amount of $2,521 per month until the maturity dates, which range from August 13, 2017 to December 13, 2020. The notes are secured by certain construction equipment of the Company	$	55,579	$	83,711
Commercial equipment notes payable to various commercial equipment finance companies and banks with  interest rates that range from 1.94% to 2.75% per annum. Monthly principal and interest payments are due in the amount of $999 per month until the maturity dates, which range from March 31, 2019 to September 24, 2021. The notes are secured by certain construction equipment assets of the Company		33,254		44,587
Commercial equipment notes payable to various commercial equipment finance companies and banks with interest rates that range from 2.01% to 2.19% per annum. Monthly principal and interest payments are due in the amount of $735 per month until the maturity dates, which range from March 5, 2020 to September 24, 2020. The notes are secured by certain construction equipment assets of the Company		29,702		38,041
Commercial equipment notes payable to various commercial equipment finance companies and banks with interest rates that range from 1.83% to 2.06% per annum. Monthly principal and interest payments are due in the amount of $788 per month until the maturity dates, which range from August 15, 2021 to October 14, 2021. The notes are secured by certain construction equipment assets of the Company		42,613		—
Two secured mortgage notes payable to a bank, with an interest rate of 4.3% per annum.  Monthly principal and interest payments of $60 per month began January 1, 2016 and continue until the maturity date of January 1, 2031. The notes are secured by two buildings		7,564		7,950
Senior Secured Notes payable to an insurance finance company, with interest rates that range from 3.65% to 4.60% per annum, with quarterly interest payments.  Principal repayment for the $50,000 loan starts on December 28, 2016, for the $25,000 loan on July 15, 2017 and for the second $25,000 loan on November 9, 2019, and continue until their maturity dates, which range from December 28, 2022 to November 9, 2025.  The notes are secured by the assets of the Company		92,858		100,000
		261,570		274,289
Less: current portion		(58,189)		(54,436)
Long-term debt, net of current portion	$	203,381	$	219,853

Schedule of maturities of long-term debt

	Year Ending
	December 31,
2017	$	58,189
2018		55,741
2019		55,246
2020		35,850
2021		22,449
Thereafter		34,095
	$	261,570