Note 10 - Leasing Activities (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block]

	Capital Leases			Operating Leases
2018	$	19,819		$	1,312
2019		20,499			1,263
2020		19,037			949
2021		13,826			502
2022		10,781			452
Thereafter		6,735			143
Total minimum lease payments	$	90,697		$	4,621
Less amount representing interest		(7,556	)
Present value of net minimum capital lease payments		83,141
Less current portion		(17,119	)
Obligations under capital leases less current portion	$	66,022

Schedule of Future Minimum Rental Receivable for Operating Leases [Table Text Block]

2018	$	123,641
2019		104,067
2020		80,054
2021		51,334
2022		28,647
Thereafter		14,961
Total	$	402,704

Lessee, Operating Lease, Disclosure [Table Text Block]

201 8	$	8,207
201 9		5,954
2020		4,445
2021		2,618
2022		1,666
Thereafter		15,113
Total	$	38,003