CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 76,190	$ 82,936
Restricted cash	1,753	1,012
Short-term investments		36
Accounts receivable - trade, net of allowance of $32 and $33, respectively	48,668	59,850
Inventories	93,269	75,768
Prepaid income tax	638	1,394
Prepaid expenses and other current assets	10,070	8,701
Total current assets	230,588	229,697
Property, plant and equipment, net	212,105	197,943
Land use rights, net	6,096	804
Intangible assets, net	3,978	4,007
Deferred income tax assets	13,151	12,801
Other assets, net	6,286	7,732
TOTAL ASSETS	472,204	452,984
Current liabilities
Current portion of notes payable and long-term debt	3,161	559
Accounts payable	51,429	43,624
Accrued income taxes	464	7,422
Accrued liabilities	16,651	19,103
Total current liabilities	71,705	70,708
Notes payable and long-term debt, less current portion	57,868	49,000
TOTAL LIABILITIES	129,573	119,708
Stockholders' equity:
Preferred Stock; 5,000 shares authorized at $0.001 par value; no shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively
Common Stock; 45,000 shares authorized at $0.001 par value; 19,634 and 19,451 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	20	19
Additional paid-in capital	288,686	285,376
Accumulated other comprehensive income	5,633	9,743
Retained earnings	48,292	38,138
TOTAL STOCKHOLDERS' EQUITY	342,631	333,276
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 472,204	$ 452,984

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.