Note 9 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

Year ending December 31:
2017	$	3,914,550
2018		2,999,262
2019		2,256,721
2020		1,701,366
2021		1,074,070
2022		545,740
2023		427,800
2024		246,698
2025		180,922
2026		6,206
Total minimum lease payments	$	13,353,335