Fair Value Measurements - Narrative (Details) board_foot in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) board_foot derivative	Dec. 31, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains recorded in the period | $	$ 62	$ 43
Unrealized losses recorded in the period | $		$ 105
Net long (Buying)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, nonmonetary notional amount (Board feet) | board_foot	770
Derivative, number of instruments held | derivative	7
Short
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, nonmonetary notional amount (Board feet) | board_foot	770
Derivative, number of instruments held | derivative	7