Note 15 - Acquisitions (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Consideration:
Cash	$	4,025
Hecla stock issued (8,309,006 shares at $5.79 per share)		48,109
Total consideration	$	52,134
Fair value of net assets acquired:
Assets:
Cash	$	94
Property, plants, equipment and mineral interests		74,320
Restricted cash		1,185
Other assets		329
Total assets		75,928
Liabilities:
Accounts payable and accrued liabilities		2,357
Deferred tax liability		20,313
Non-current reclamation liability		1,124
Total liabilities		23,794
Net assets	$	52,134

Consideration:
Cash	$	949
Hecla stock issued (6,252,646 shares at $3.06 per share)		19,133
Total consideration	$	20,082
Fair value of net assets acquired:
Assets:
Cash	$	140
Accounts receivable		137
Inventory - supplies		472
Deferred tax assets		7,193
Property, plants, equipment and mineral interests		17,609
Reclamation insurance		16,800
Other assets		280
Total assets		42,631
Liabilities:
Accounts payable and accrued liabilities		975
Notes payable		4,061
Non-current reclamation liability		17,513
Total liabilities		22,549
Net assets	$	20,082

Business Acquisition, Pro Forma Information [Table Text Block]

	Year Ended December 31,
(in thousands, except per share amounts)	2016		2015
	(unaudited)
Sales of products	$	645,957	$	443,567
Net income (loss)		68,778		(89,806	)
Income (loss) applicable to common shareholders		68,226		(90,357	)
Basic and diluted income (loss) per common share		0.17		(0.24	)

	Year Ended December 31,
(in thousands, except per share amounts)	2015
	(unaudited)
Sales of products	$	445,703
Net loss		(89,118	)
Loss applicable to common stockholders		(89,670	)
Basic and diluted loss per common share		(0.24	)